Technical Information
TwisTorr 74 FS User Manual / 87-901-053-01 317/342
Vent Accessories
The vent valve (9699844) allows to avoid undesired venting of the
pump during temporary power failure and enables an automatic vent
operation.
This vent valve waits before opening a minimum time of about 5 sec.
This time can be increased up to about 220 min. by means of a setting
of the controller software (optional).
To install the vent valve, remove the M5 threaded plug (see figure
below).
Then screw the vent valve into the pump and tighten it using a 16
mm hexagonal spanner with a torque of 2.5 Nm.
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